Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/55566
Type: Artigo de periódico
Title: Bioenergy II: Acid Diphosphates as Catalysts for the Production of Methyl and Ethyl Esters from Vegetable Oils
Author: Marciniuk, LL
Garcia, CM
Muterle, RB
Schuchardt, U
Abstract: Acidic lanthanum and aluminum diphosphates were prepared and characterized (surface area, XRD, FT-IR, 31P-NMR and 27Al-NMR). These materials were used as catalyst for the esterification of oleic acid and transesterification of soybean oil. Under optimized conditions the methyl and ethyl ester yields were above 95%. Although the catalysts are recyclable, they slowly lost their catalytic activities, due to leaching of the phosphate.
Subject: transesterification
biodiesel
solid acid catalysts
lanthanum diphosphate
aluminum diphosphate
soybean oil
esterification
oleic acid
Country: Alemanha
Editor: Walter De Gruyter Gmbh
Rights: embargo
Date Issue: 2009
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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